Computer Science/IT MCQs
Topic Notes: Computer Science/IT
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
5991
Which network provides a more consistent speed?
Answer:
Wired network
A wired network is not subject to the same fluctuations in signal strength and interference as a wireless network, so it provides a more consistent speed.
5992
What does a switch do when it receives a frame with an unknown destination MAC address?
Answer:
It floods the frame to all ports except the one it came in on.
When a switch doesn't know where a destination MAC address is, it acts like a hub and floods the frame to all ports to ensure it reaches its destination.
5993
What is a key characteristic of the client-server relationship?
Answer:
It is a many-to-one relationship (many clients to one server).
Typically, a single server is designed to serve requests from many different clients.
5994
In a P2P network, how do peers find each other?
Answer:
They use a central directory or discovery protocol.
While the data transfer is decentralized, many P2P systems still use a central server (a tracker) to help peers find each other.
5995
What is the main difference between 2.4 GHz and 5 GHz Wi-Fi?
Answer:
5 GHz is faster but has a shorter range.
The 5 GHz frequency band offers higher speeds but is more easily obstructed and has a shorter range than the 2.4 GHz band.
5996
Can a device have both a wired and a wireless connection?
Answer:
Yes
Many devices, such as laptops, have both an Ethernet port for a wired connection and a Wi-Fi adapter for a wireless connection.
5997
Which device has now largely been replaced by switches in modern networks?
Answer:
Hubs
Due to their inefficiency and the creation of collision domains, hubs have been almost completely replaced by switches.
5998
Distant office LANs can join as part of a corporate:
Answer:
WAN
Wide Area Networks (WANs) interconnect geographically spread local networks.
5999
What term describes the amount of space available for sending/receiving data over the internet?
Answer:
Bandwidth
Bandwidth refers to the maximum data transfer capacity of a network connection, typically measured in bits per second.
6000
What is throughput?
Answer:
The actual measured speed of a network at a particular time
Throughput is the real-world performance of a network, which is often lower than the theoretical bandwidth due to factors like latency, congestion, and protocol overhead.